A company called Onavo is doing exactly that: http://www.onavo.com/ http://www.onavo.com/ They have an iOS app that configures your device to use their proxy

A company called Onavo is doing exactly that: http://www.onavo.com/ http://www.onavo.com/ They have an iOS app that configures your device to use their proxy servers. I haven't tried it myself since I'm a bit hesitant to route all my traffic through a third party, but it does sound promising.